1. a road, path, or railway that zigzags up or down a steep incline with sharp turns
2. a roller coaster
Usage: British

1. to follow a zigzag course

Examples

• The mountain switchback made driving treacherous in winter.
• We climbed the steep trail using the switchback path.
• The old switchback railway was a popular attraction at the fair.
• The road switchbacks up the mountainside for several miles.
• Hikers appreciated the switchback design that made the ascent manageable.
• The switchback turns offered stunning views of the valley below.
• The trail switchbacks through the forest to reach the summit.